New constipation in children

There are many reasons why a child who usually has regular, soft bowel movements becomes constipated. The most common causes of constipation are:

  • Switching a baby from breast milk to formula, especially during the first 2 to 3 weeks of life. You may need to add extra water to your baby's formula for several weeks until your baby is no longer constipated.
  • Changes in diet, such as when a child starts eating more adult foods. Constipation may also occur if your child drinks an excessive amount of cow's milk. This happens most often in children younger than age 2.
  • Low fluid intake. Sometimes the normal amount of fluid a child drinks is not enough, such as when the weather gets hot or the child increases his or her physical activities.
  • Not taking the time to have a bowel movement. A child may be so interested in play that he or she ignores the need to have a bowel movement.
  • Reluctance to use the bathroom. A child might become constipated when he or she is in a new environment, such as when traveling.
  • Changes in daily routine, such as when traveling or after starting school.
  • Medications. Many medications can cause constipation.

Most young children will not be able to describe the feeling of fullness (bloating), nausea, or mild rectal pain caused by trying to pass a hard stool. Parents may notice that the child is irritable, fussy, or has a bloated abdomen when he or she is constipated.

A new bout of constipation usually improves with home treatment and prevention.

In rare cases, constipation in a child may be related to another, more serious, health problem.



Author: Jan Nissl, RN, BSLast Updated: December 14, 2006
Medical Review: Michael J. Sexton, MD - Pediatrics
Thomas Emmett Francoeur, MDCM, CSPQ, FRCPC - Pediatrics

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